Born. To Pierre Trudeau, 52, Prime Minister of Canada, and Margaret Trudeau, 23, daughter of former Fisheries Minister James Sinclair: their first child, a boy; in Ottawa, on Christmas Day.

Died. Joseph Revson, 66, a co-founder of the small nail-polish business that grew into Revlon, Inc.; of a heart attack; in Manhattan. "This driving, gnawing urge to win has to come from within," Joseph once said. RevIon became known for high-powered advertising campaigns and varied new products that boosted sales from $4,000 in 1932 to $371 million last year. Company Head Charles Revson's urge to win evidently proved stronger than his brother's. Joseph resigned as vice president and general manager of the firm in 1955.

Died. Johnny Addie, 69, staccato-voiced ring announcer at Madison Square Garden; in Manhattan. A Wall Street broker who moonlighted at the fights, Addie announced virtually every major bout at the Garden since 1948, became a nationally known figure when the fights were on network television during the 1950s.

Died. Roy O. Disney, 78, co-founder with his younger brother Walt of the Disney entertainment empire; of a stroke; in Burbank, Calif. Walt was a young cartoonist and Roy had just left a tuberculosis sanatorium when they decided to start a Hollywood studio in 1923. For capital the two brothers pooled Walt's $40, Roy's $250 and $500 borrowed from an uncle. Roy's role as money manager was defined early: "I deal with the banks and give Walt a free hand." After Walt's death in 1966, Roy continued as president and board chairman of Walt Disney Productions, concentrating on the creation of the $400 million Disney World near Orlando, Fla.

Died. Clarence Cook Little, 83, educator and pioneer cancer researcher; in Ellsworth, Me. When Little emerged in 1954 as a spokesman for the tobacco industry, arguing there was no firm clinical evidence linking smoking and lung cancer, few were surprised. The brilliant geneticist had long been regarded as a maverick. Little suspended his research to run the University of Maine from 1922 to 1925. Later, as president of the University of Michigan, he angered students by attempting to ban on-campus drinking and enraged parents by lecturing on birth control. In 1929, Little left Ann Arbor for Bar Harbor, where he founded the prestigious Roscoe B. Jackson Memorial Laboratory for cancer research.

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